Teaching-Tools.com contains a series of online "tools" enabling you to quickly generate an almost infinite number of math (and other subjects) worksheets and their answer keys.
You can then choose to...More: lessons, discussions, ratings, reviews,...

This is a puzzle with 9! possibilities and 336 solutions. The problem posed in 9 digits consists in the organization of the numbers 1 to 9 in a square of 3 * 3 to make the sum of the numbers of the fi...More: lessons, discussions, ratings, reviews,...

This is a virtual manipulative to support developing number sense and arithmetic concepts. Two sub-quantities together result in a new total quantity. This is called addition. And if you take away a s...More: lessons, discussions, ratings, reviews,...

Puzzle with 9! possibilities and 336 solutions. The problem posed in Ninedigits workshops consists in the organization of the numbers 1 to 9 in a square of 3 * 3 to make the sum of the numbers of the...More: lessons, discussions, ratings, reviews,...

Alterable worksheet in which students estimate the positions of points on unmarked number lines, on the intervals [0, 100], [0,1000], [-10, 0], [-100, 0]. Fee required for printing: see this page.More: lessons, discussions, ratings, reviews,...

The user trains multiplication skills. Homer Simpson inspires the user to learn multiplication. Game runs in two modes. In case of wrong answer it displays the right one. Game is time limited.More: lessons, discussions, ratings, reviews,...

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
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